[Q] Totaly lose 3G mobile data connection - Nexus 5 Q&A, Help & Troubleshooting

The issue cames at Tuesday or maybe Wednesday(not very sure), the 3G(WCDMA) connection lost, I've checked APN, mobile data switch, data roaming, get nothing. Before that it works perfectly. It just happened.
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As u may see, at *#*#4636#*#*, UMTS actived, and all my sms, calls are working fine too, but GPRS was always "Disconnected". even when I insert another 3G sim from my friend, and of course I've tried my sim on others phone, 3g works fine. ThenI had try my old 2G sim card, it works fine too(both mobile data and sms), it feels like just 3G network has been isolated on my phone, no sent no received. I've set the "WCDMA only" or "WCDMA preferred", nothing changed.
I've factory reset or wipe everything or update to 4.4.2 or downgrade to 4.4.0 several times, nothing changed, won't get "3G" or "H+" next signal bar.
I've found somebody in China has these issue, I'm in China too
:crying::crying::crying::crying:
Model: LGD820 White 32GB(US)

That shows you are on China Unicom but do they support 2G only? When you switch to that (not using 4636, just normal Mobile Networks switcher) does it show up with EDGE connection?

Nope, no "E" icon appear too, but with my another old sim, "E" Edge works fine, I guess my new sim card could only access network through 3G

I got "China Unicom was upgrade their base station for 4G network build these days" from one of my friends works in China Unicom, so this was just the reason of lost of 3G. And these was not the only, LG G2 (Ver. HongKong) got the same issue in some city of Hunan China.
But as I know most phone(ver. US or UK or Pacific Asia) had no issue like this.
So is there anyone could offering me some advice to conquer this issue? About baseband? Anyway could lemme capture the signal or mobile data handshake packet or something like this?

i m also in Hunan China,and my D820 no 3G,similar with you.

me too in us
sprint 3g in US (richmond va) happens to me all the time, especially when im at work, and it seems to do it under heavy data load... twitter, facebook, etc

loachh said:
I got "China Unicom was upgrade their base station for 4G network build these days" from one of my friends works in China Unicom, so this was just the reason of lost of 3G. And these was not the only, LG G2 (Ver. HongKong) got the same issue in some city of Hunan China.
But as I know most phone(ver. US or UK or Pacific Asia) had no issue like this.
So is there anyone could offering me some advice to conquer this issue? About baseband? Anyway could lemme capture the signal or mobile data handshake packet or something like this?
Click to expand...
Click to collapse
Has your friend said when this will be fixed? I am in Changsha, Hunan and I just got back here from the states two days ago. When I landed in Beijing...great data signals. The I landed back in Changsha...no data. Just my luck that I get pretty much the only phone that doesn't work in my city. Any help is appreciated. Thanks for this post to BTW since it seems everyone else is arguing with me. I just want to know when this will be returned back to normal in Hunan or any way to fix this issue?

In my Phone N5 3g is working very will..

As I known from several Chinese forum it has already been fixed in Changsha (by China unicom of course ), but I'm in zhuzhou (a city next to Changsha ). Here's some ways I discovered may works for u.
Turn the mobile data on/set apn of course, get in the phone information page through the info code (in case u dunno, dial *#*#4636#*#* at your dial pad page ). Switch the preferred network type to any type other than GSM only, let the signals lost, then switch back to GSM only, wait a while(10 sec). Did the E or G icons appeared next to your signal bars?
Yes? Congress dude, u found a working station, wait a while then switch back to WCDMA prefer or WCDMA only whatever u like. H or H+ would came out!!!!! And then walk around, now u can go anywhere u want.
If it's not came out then f*#king the station cuz it's just the one which "block" your phone (not your phone issue I promise, I bought the second Nexus 5 because I THOUGHT IT'S MY F#*KING PHONE WITH F*#KING ISSUES !!!!!!!!!!!!). Now go somewhere else and try again to find the "right " station.
PS: As long as u get online & never switch off the data then u could be online like 12 hours wherever u are (in service area of course )even roaming to "blocking station" till carrier reset u (regularly )
PSPS :I've found like 7 working station in zhuzhou, one of them was available to connected 17 floors above where I'm working. It sucks!!!
If u willing to chat pm me with your hangouts or something u wanna to say cuz it will notification on my phone

I fogot to click on reply u, lemme try again......... Type so much on phone was so damn hard working

Related

[Q] Is it possible to add CSC from SGS to SNS (Nexus S)?

the phone is working fine
except instead of showing the Name of my cell phone provider, it only shows the tower ID number.
I was supposed to see:
Wind (Home)
or
Wind (Away)
they show up properly on my SGS and XT720
Ironically, with the SNS, i did not even have to configure the APN settings, it automatically got both the MMS and Internet APN settings.
kinda funny if you ask me, it knows the Wind internet and multimedia settings but can't report the tower names
if i use the Wind (Away) towers i get charged roaming
so ideally i'd like to only use Wind (Home) similar to Tmobile Zones towers for my 3G and voice, to not see a huge bill at the end of the month
This thread on Howard Forums might interest you if you haven't found it already. Seems like the difference is that Wind sends out number instead of name if I read it correctly.
You might be able to edit the eri.xml file to deal with this, as instructed in this thread on xda for AOSP roms.
As far as CSC goes, I don't think the NS uses that. I've never seen it mentioned in discussions about other devices besides the Galaxy S line of phones using Samsung ROMs.
P.S. - be careful messing with the frameworks apk. I made a bad edit to the one on my i9000 once and it wouldn't boot. Easy enough to fix by replacing with a good copy, though.
Thanks for those 2 links
I'll check them out.
That's very helpful, if it's a simple edit of the file
I've been busy jumping between the 3 forum, and fixing the SGS i9000m to work properly, which i just got back yesterday, and it pretty much died on me right away after upgrading to JL2 and restoring only the backup for user app+user app settings (no system app/data restored)
Heh I've been wondering about this too... but seeing "302490" instead of "Wind (Home)" doesn't really bother me that much... I'll know if it's Wind Away when the number is different lol.
dinan said:
Heh I've been wondering about this too... but seeing "302490" instead of "Wind (Home)" doesn't really bother me that much... I'll know if it's Wind Away when the number is different lol.
Click to expand...
Click to collapse
Yeah, that's what some in the Howard Forums say; as long as they know they're not roaming. When you're on Wind Away, does the "roaming" indicator show? The framework shows there's a flag for it.
I would be with Allgamer myself; I'd like the proper carrier name to show.
well New Year eve is here
and the "long weekend" is starting soon
if i have time after the parties and stuff to work on the quick fix, i'll upload the file to share for the rest of the XDAers on Wind Mobile
There's an easy fix for that.
On the dialing screen, dial *#*#4636#*#*
Phone information->choose WCDMA only (Wind runs on 3G only).
mingkee said:
There's an easy fix for that.
On the dialing screen, dial *#*#4636#*#*
Phone information->choose WCDMA only (Wind runs on 3G only).
Click to expand...
Click to collapse
this is a Good solution.
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however, it still needs some Cosmetic "visual" fix for eyes candy
and what distortedloop pointed out seems to be the quickest fix
AllGamer said:
however, it still needs some Cosmetic "visual" fix for eyes candy
and what distortedloop pointed out seems to be the quickest fix
Click to expand...
Click to collapse
Assuming it actually works...
Looking forward to hearing the results, even though the issue doesn't affect me.
i spend time trying a few this morning and nothing....
because there is only 1 SPACE !!!!! available to Hex Edit a letter into the xml file
i tried the other method they mentioned further down into the topic, and it was not compatible
good thing i was flashing my phone a few times.
running TW ROM right now.
so in the end, it is Do able, but we only get 1 letter out of it.... which IMO is worse than seeing the full row of numbers 302490

[Q] Maximum connection speed = 3G? Why?

Hello,
I've just followed the procedure explained in this thread LINK in order to enable the network sharing option on my Samsung Omnia 7, but now there's something a bit strange.
Also, I want to thank the author of that procedure (can't post in his thread because of the limitations of my new account).
If i tap the "Cellular network" tab in the phone settings now I see a new selection tab named "Maximum connection speed", wich I haven't got before doing the procedure:
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(before the update I only had got - at this height of the tab - Roaming options and Network selection...no trace of that "Maximum connection speed")
If i tap the selection box i can choose from 2 options: E (edge) and 3G.
I don't see H (hsdpa) option and now 3G is the chosen option.
If i use my connection i see the 3G icon at the top of the screen become H, as always, but I'm confused and I don't know if the navigation speed is the same as before...
Is that normal? How can I test my speed?
By the way I made a backup, so I can restore my phone if it's needed!
3G is HSDPA (in some countries 3.5G/HSDPA+). 3G is only the network used for texting and video/calling, whereas mobile internet is connected through the form of HSDPA via 3G network. It's like 2G/EDGE and 4G/LTE.
I thought that selection would have affected the navigation speed, but not in this case.
Thank you!
Dicoluc said:
Hello,
I've just followed the procedure explained in this thread LINK in order to enable the network sharing option on my Samsung Omnia 7, but now there's something a bit strange.
Also, I want to thank the author of that procedure (can't post in his thread because of the limitations of my new account).
If i tap the "Cellular network" tab in the phone settings now I see a new selection tab named "Maximum connection speed", wich I haven't got before doing the procedure:
(before the update I only had got - at this height of the tab - Roaming options and Network selection...no trace of that "Maximum connection speed")
If i tap the selection box i can choose from 2 options: E (edge) and 3G.
I don't see H (hsdpa) option and now 3G is the chosen option.
If i use my connection i see the 3G icon at the top of the screen become H, as always, but I'm confused and I don't know if the navigation speed is the same as before...
Is that normal? How can I test my speed?
By the way I made a backup, so I can restore my phone if it's needed!
Click to expand...
Click to collapse
I also noticed this... But I also noticed that, near the bars that represent the signal quality, there was written 3G+
lordmago said:
I also noticed this... But I also noticed that, near the bars that represent the signal quality, there was written 3G+
Click to expand...
Click to collapse
Yes, it's a Samsung related thing.
They chose to use 3G+ instead of H to refer at HDSPA...meh.
By the way, using the "Advanced Configuration" homebrew I was able to change that weird icon from 3G+ to the classic H.
Ps. Magus, sei tu? XD
A few questions asked here:
Why did this option appear?
It's actually supposed to be there, but some OEMs or mobile operators hide it by default. Many homebrew tweaks un-hide it (it's just a single registry value).
What does it do?
It lets you force the phone to use 2G (including EDGE) instead of 3G (including HSPDA). There are two reasons you might do this: to save battery (3G is a battery hog, relatively speaking) or because you have a very marginal 3G signal but a strong 2G one and therefore actually get a better connection if you force the phone to use 2G.
How can I test my speed?
There are a number of ways. The marketplace has several apps for bandwidth testing (though some provide wildly inaccurate results). You can also tether your laptop to the phone (using either the USB cable and a small tweak, or using the built-in Internet Sharing feature over WiFi) and then use a standard bandwidth test site like http://speedtest.net (which uses Flash and is therefore not usable in the phone's browser).
Hope that helps!

[Q][BAKED BLACKBEAN] 2G\3G switch not working

Coming from CM 10, did a full wipe (data, system, etc) and installed BB 8. the switch in power widgets and also the one in quick tiles don't work. The icon changes, but the change isn't actually taking place, and when I click again it's stuck. This is quite troubling 'cause I use 3G outside and Wifi and 2G at home, so I switch a lot, and right now I have to go thru menus to do that Is anyone experiencing this\ know of a way to fix it?
lovefallen said:
Coming from CM 10, did a full wipe (data, system, etc) and installed BB 8. the switch in power widgets and also the one in quick tiles don't work. The icon changes, but the change isn't actually taking place, and when I click again it's stuck. This is quite troubling 'cause I use 3G outside and Wifi and 2G at home, so I switch a lot, and right now I have to go thru menus to do that Is anyone experiencing this\ know of a way to fix it?
Click to expand...
Click to collapse
i dont understand why you even have to switch (manualy).
mine switches automaticly, without ever setting it up.
when home or a place with a known wifi-network it will always use that (and gsm/2g for calls).
when no wifi is availible hspda is used. (or wifi is switched off).
i have no excessive drain from the always wifi on, still get about 4+hours screentime in a 24h batterycycle.
real187 said:
i dont understand why you even have to switch (manualy).
mine switches automaticly
Click to expand...
Click to collapse
Well, you must be lucky, because mine doesn't :laugh: , just did a test to confirm it:
1) switch on 3g and data
2) switch on wi fi
3) dial *#*#4636#*#* and tap "phone info"
4) scroll down and voila, tge phone is still in "wcdma preferred", it didn't automagically switch to GSM
lovefallen said:
Well, you must be lucky, because mine doesn't :laugh: , just did a test to confirm it:
1) switch on 3g and data
2) switch on wi fi
3) dial *#*#4636#*#* and tap "phone info"
4) scroll down and voila, tge phone is still in "wcdma preferred", it didn't automagically switch to GSM
Click to expand...
Click to collapse
Yep you right it broken it show 2g but don't change. Also as far I know and see is that the network data is turned of when wifi is on so you are kinda wasting your time doing what you doing.
I just checkked. Switch doesnt work.
But device works correct.
my device i will switch to GSM only.
Its always on cdma prefferd, thats just a setting that wil not change on itself!!
If i look at my cellinfo.
If i look with wifi off. The GSM is active. And the GPRS service is active On UMTS network.
Wifi on. GSM is active but the GPRS is inactive, So no data.
So it works correctly here.
(btw GPRS is just the global name for dataconnection, type of connection is next line)
Wifi on:
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Wifi off:
Verstuurd van mijn HTC One S met Tapatalk
---------- Post added at 11:41 PM ---------- Previous post was at 11:22 PM ----------
lovefallen said:
Well, you must be lucky, because mine doesn't :laugh: , just did a test to confirm it:
1) switch on 3g and data
2) switch on wi fi
3) dial *#*#4636#*#* and tap "phone info"
4) scroll down and voila, tge phone is still in "wcdma preferred", it didn't automagically switch to GSM
Click to expand...
Click to collapse
Can you post 2 screenshots? With wifi of an on, just to check.
Remember to hide your IMEI!!
Verstuurd van mijn HTC One S met Tapatalk
real187 said:
Can you post 2 screenshots? With wifi of an on, just to check.
Remember to hide your IMEI!!
Click to expand...
Click to collapse
Sure. Here is what I get by setting 2G network only, by going thru menus - and it's what I was able to set via powerwidgets on cyano:
Enabling and disabling wifi doesn't change anything about network, it only disables data.. but that's not what I need, sorry if I haven't been clear in my previous posts.
My point is enabling 2G network, not switching data on\off . The data switch works fine, but I want to stay on 2G when I'm not using wifi or when 3G signal is poor
lovefallen said:
Sure. Here is what I get by setting 2G network only, by going thru menus - and it's what I was able to set via powerwidgets on cyano:
My point is enabling 2G network, not switching data on\off . The data switch works fine, but I want to stay on 2G when I'm not using wifi or when 3G signal is poor
Click to expand...
Click to collapse
Not much I can do sorry you just have to wait in till team baked fix it.
Darknites said:
Not much I can do sorry you just have to wait in till team baked fix it.
Click to expand...
Click to collapse
No problem, the ROM is awesome in every oher aspect, so I'll stick with it anyway!
Thanks for your time guys

[Q] OPO flashed on CM11s - Mobile Data issues

[/ATTACH]Hello my friends,
I really need your help now. Since the Oneplus One is so new there are only few people having experience with the smartphone and it's Problems. I searched the whole Internet but dit not find anyone with the OPO who has the same Problem as me..
My OPO is the chinese Version and i flashed it without PC on CM11s.
But I found that my Smartphone has got no mobile Internet and also I am not able to call someone.
After I saw this I flashed the phone two more times, but with my PC and fastboot. I used the Images here: https: //cyngn.com /products /oneplusone/
Once I flashed my phone with PC and fastboot I got mobile data sometimes for about one or two minutes, after that it breaks down.
My APN's are the same with my Provider.
I tried to solve this Problem for the whole weekend, I now even consider selling the phone again..
It would be really really nice if someone is able to help me!
Best regards,
4p9xD
My phone Display:
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hi
I had a similar problem. I had a sim card trimmed with scissors and was too loose.
I replaced the card with a new one.
A problem, however, remained. Sometimes I can not call, sometimes not the Internet. It looks like something crashed and helps only restart.
You tried to upload the "modem chack"?
I have the same problem. I hope it is not something with hardware.
I don't know... could you check production date on the box?
Sounds like a kernel issue, did you flash the right one?
Sent from my One using XDA Premium 4 mobile app
What do you exactly mean saying rightone?
If you have a Chinese version then you need a kernel made for your phone.
Sent from my One using XDA Premium 4 mobile app
I instaled cm11s in fastboot according to instruction on this site. Can you show us which kernel we must use?
I'm exactly the same. I installed by the recovery and than two times through fastboot. ROM from the official site.
Another one here! I have exactly the same thread starter problem, 1 min after turn on the phone I cant call anymore or sending messages...
Right kernel? Can someone explaine? I have tryed to flash 3 version of CM11 and return back to ColorOS, the problem is not solved :|
the problem occurs on coloros? I can call but not always. The issue is when switching between frequencies - from internet 4G to gsm...
wyslane z OnePlus One
chriss2 said:
the problem occurs on coloros? I can call but not always. The issue is when switching between frequencies - from internet 4G to gsm...
Click to expand...
Click to collapse
And still no solutions?
Is possible that this is a hardware problem?
Bump!
Please help us boys, I have tried everything, I really dunno what to do
same problem
I'm having the same problem, the phone was working just fine when i first used it on ColorOs with voice calls working on 4g. however, as soon as I flashed CM11 it stopped working and I can only use 2g to make phone calls even though 4g internet works fine. I have flashed ColorOs but a rooted one, CM11 and other roms the problem is still there. If some one can find a solution for us I would be grateful.
if someone tried to flash modem hack... I've seen 3 versions...
wyslane z OnePlus One
the problem still occurs?
wyslane z OnePlus One
I have the same issue, after flashing to CM11s, its like the cell network is sick, turn on for a while, then off. when the phone is in the pocket (sleep) totally not network, and people cannot call in.
I flash back to Colour OS, more stable and 4G is working fine.
chriss2 said:
the problem occurs on coloros? I can call but not always. The issue is when switching between frequencies - from internet 4G to gsm...
wyslane z OnePlus One
Click to expand...
Click to collapse
If you didn't flash a new radio, then its probably a kernel issue.
Sorry where can i find the new radio for OPO...?
wyslane z OnePlus One
hi
I could not find radio.img for the OPO. I found the network settings through the code: *#*#4636#*#* and changed the settings.
was: TD-SCDMA, WCDMA and LTE
new: LTE / WCDMA
and see if it is ok...
original threads:
http://hippowise.com/how-to-permanently-enable-lte-on-android-4-2-2-nexus-4/
https://forums.oneplus.net/threads/4g-lte-issues-build-prop-edits-fixed-it.57071/

Question Dev Option "Mobile Data Always Active" No Longer Functional

I have an ATT branded S21+ and have an issue I am trying to solve around always keeping my mobile data on. I connect to a couple of devices around the house, in the truck, and on the boat that are "wifi" devices. (For instance, on my boat, I have a WIFI transducer that sends sonar data to my phone for depth and temperature) Problem I am having is while I am connected to these sources, which do not have internet service, my phone refuses to use mobile data. I used to be able to toggle the "mobile data always active" function in dev options to correct, but it no longer seems to function. Anyone have a workaround?
S21+, A12, One 4.1, and just to see if it would correct the problem, I recently moved over to the U1 firmware. The problem still exists, but at least I don't have the ATT bloatware anymore.
go to settings > software information > tap Build number 7x or 10x idk...
Go back to Settings > scroll down and find Developer Options > search Mobile Data Always Active
That's what I was saying in the title of the post. The Dev Option is checked on, but it does not do anything and mobile data is not connected simultaneously. In past firmware (pre A12), when you toggle that on, the "5G" symbol shows up in between the Wifi and Signal Strength meter.
Nobody has run into this?
I have the same problem. Found settings under connections, mobile only apps, but it seems to do nothing.
There has to be a developer who can fix this. Willing to donate if so!
stringman666 said:
I have the same problem. Found settings under connections, mobile only apps, but it seems to do nothing.
Click to expand...
Click to collapse
The weird thing is, I used that option to test this as well, and with the dev toggle mobile data always active OFF it does work for some reason....
My Chrome using whatismyip shows a Vodafone IP correctly..
I don't even have a "Mobile Data Only Apps" option to select. I know where it's supposed to be, it's just not there. On Samsung A12 U1 firmware.
ki4mqz said:
I don't even have a "Mobile Data Only Apps" option to select. I know where it's supposed to be, it's just not there. On Samsung A12 U1 firmware.
Click to expand...
Click to collapse
I have my phone set in Dutch language but the general idea is the same. Here's my menu and software version. It's unrooted stock latest software with Knox intact but with Samkey edited CSC as this is/was a carrier locked phone which I changed to a different carrier CSC.
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Same issue here on my Note20 Ultra.
Did you find any workaround to have both connections active in the status bar?
Hi, I have the same issue with my Redmi Note 9 Pro with MIUI 12.5.7.
I have the "Mobile Data Always Active" option activated and it isn't working, when connected to Wifi the mobile data isn't connected...
Anyone knows a fix for this?
Or there is any app that can be a workaround?
Same here with s21 plus on Verizon, I used to have both 5G and wifi on, after the last update the 5g icon disappeared while im on wifi. The problem is everytime I leave a wifi area the phone takes forever to switch back to mobile network and I have to restart the phone.
el5al said:
Same here with s21 plus on Verizon, I used to have both 5G and wifi on, after the last update the 5g icon disappeared while im on wifi. The problem is everytime I leave a wifi area the phone takes forever to switch back to mobile network and I have to restart the phone.
Click to expand...
Click to collapse
Same here, I used to use this a lot using my phone with a wifi obd scanner, the scanner obviously doesn't connect to internet so having cell data with the wifi connection was great to be able to read codes for vehicles, it's been about a year or 2 since it quit working for me on anything android 11 and up
Same issue here on my Galaxy Tab A7. The intelligent Wi-Fi doesn’t even work. There is this app Speedify that works for free up to 2gb. It does channel bonding via a VPN but I would like for the basic features built into my OS to work also

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